Fire-door apparatus.



' the United States;

. and .other furnaces,

' applied to the motor cylinder En YSTATES PATENT Aonirica.

ALBERT G. ELvIN, or soivInRvILLn, Nnw JERSEY, AND SAMUELD. Ito'sENrnLT,:or

f CHICAGO, ILLINOIS.

FIREDOOR APBARATU'A'S'.

Specification of Letters Patent.

To all whom z't may concern l.

Be it known that we, 'ALBERT G. E LVIN and SAMUEL D. RosnNrnL'r, bothcitizens of and residents, respectively, of Somerville, in the county.of Somersetl and State of New Jersey, and of Chicago, in the county ofCook and State of Illinois, havejointly invented a certain new anduseful Improvement of which improvement the following is aspecification.

This invention relatesto apparatus for Loperating fire doors oflocomotive boilers,

and'has for its object to provide an improved iuid `pressure op-l eratedapparatus of this character in which are pivoted to swing ment, and toAclose bygravit The improvement claimed is hereinafter vfully setforth.v

, In the accompanying drawings: Eigure 1 is a front elevation of a firedoor apparatus embodying our improvement, the motor cyl inder beingindicated in longitudinal section; Fig. 2, a transverses'ection o f thesame the fire opening boiler; Fig. 3, a plan or top view of the motorcylinder and the operating connections; and, Fig. 4, a' transversesection of `and illustrating a modification inthe means for supportingthe Same.

cylinder casting,

v The opening is covered by the pair of doors,

10 and 11, which meet together upon the vertical center-line of theopening, and are pivoted toi swing laterally and vertically upon thelrespective pins, 7 and 8, which are mounted in recesses in the frameextension,

back, and in hollow bosses,`,21, of 20, at the front, which plate may 1,at the the plate,

be formed as an integral extension of the i of the doors, 10 and 11,

The pivoted arms are provided with the respective gear seglink, 14,pivotally .in Fire-Door Apparatus,

' 6, moving the same f swings the doors of a locomotive' 3. The doorframe is pro- 4, of thedoor motor,

. Patented June 13, 1916. Application led September'l, 1913. Serial110.789,645. i

ments, 12 and 13, which mesh together, and I both doors are thusoperated by means of the lug, .12% and at the -other end to a pin, 15,carried by the piston,"6, and extending through a. horizontal slot inthe side of the motor cylinder, 4. vOne end ofthe cylinder is closed bythe cap., 5, and the pistoneis operated by pipes, 24 and 25, andcontrolled by the valve,

16, which may be of any suitable construov tion, preferably operated bya pedal device acting on the stem, 19.

When the operator desires to open the furnace doors for'jfiring, orotherpurposes, he opens the valve,

16, thereby admitting fluid attached at one end to the fluid pressureadmitted through" v into the cylinder, where it acts on the piston, 'i

to the right, and, through link yand segmental gears, upward on their.pivots to the open position', in which the doors remain as long as-thevalve, the va ve is released and closed, the Huid eX- the connectinghausts from the cylinder, and the doors closel by gravity, the outletpassage for the exhaust being restricted to prevent -slamming of thedoors.l

For the purpose `of operating the doors by hand whenever desired, weprovide a hand lever, V18, which is curved around the door openingandprovided with a .straight shank, 18", at its upper end, and ahandleflS,at

its lower end. The shank is pivoted loosely on the pin, 7, of the door,10, and is adapted to engage a boss' or lug, 17, formed on saiddoor'insuch a manner as to swing the door upto its open position whenthe lever is pulled up by the handle, 18a. This movement isalsotransmitted through the geared segments and link to move the pistonout', and open the other door, 11, at the same time. Inl order to holdthe door open in different positions, the plate, 20, may be provided onits rear facelwith a number of notches located at desired points, suchas 31 and 30, and adapted to engage the lever, 18, and hold the same insuch position. The lug, 17, is preferably formed with an .in-

plate when the lever is pulled upward by the handle, the looseness ofthe bearing of the lever uponl the pin readily allowing for suchdeflection. One of thenotches, 3l, is

16,.is held open. -When located so as. to latch the door open slightlyfordraft purposes and preventing the formation of smoke when thelocomotive isl standing at a station, while another notch,

30, is located at or near the end of the movementrof the lever in orderto latch the door fully open when desired. If the door should bestanding latched by the hand lever in its partly open or draft position,when the controlling valve is opened for operating the fluid pressuremotor, the piston acting through the rack and segment swings the dooraway from the hand lever to'its wide openposition, the hand lever at Ythe same time dropping out of said notch swings back by gravityto itsstop, at its normal closed position. Then upon releasing the control,nling valve, the door closes in the usual way.

, If, however, the door is lat'chedI by the hand ing of the doors bythemovement of the valve orthe failure of the fluid pressure,

p when the doorsare manually set to the open 4fireboX for inspection orArepairs.

position for the purpose of entering the It also enables the fireman tooperate the doors by fluid pressure in the usual manner, even xwhen thedoors are set at the intermediate draft position.

In Fig. l,` We have shown a modied form of pivot pin on which the door'or doors may be hung, and also adapted to support 'the motor cylinder.;/InV this'construction, the; pin, 7a, is provided with an interme diateor middle portion of comparatively .large diameter, on Which the door,10, and

the hand lever, 18, are mounted, and two reduced 4end p'ortions formingshoulders against one of'which the frame, 1, is rigidly 4clamped by anut on the rearend of the pin, the other kreduced end extending throughthe cylinder flange or plate, 20,

whichis rigidly clamped against the other l shoulder of thepin .by thenut on its front end. Inthis-way the pin is firmly secured turbing thedoor, by simply uncoupling the link, and removing the nuts from thepins.

A bracket arm, lb, boltedto the frame, may be employed for bracing thetop of the cylinder, if desired.

Having now described our invention, whatwe claim as vnew and desire tosecure by Letters Patent is: A

l. In a fire door apparatus, the combination of a door frame, adoor'pivoted at its upper side to swing laterally and vertically, amotor cylinder mounted above said vdoor and having a depending flange orplate, a piston in said cylinder with connections for operating Saiddoor, and a pivot pin for the door, mounted in said frame and in thecylinder plate.

2, In a lire'v door apparatus, the combination of a door frame, a doorpivoted at its upper side to swing laterally and vertically,

a motor cylinder mounted above said pivot and having a depending flangeor plate, a

piston with connections for operating said door, and a pivot pin for thedoor, mounted at the rear end in the frame,' and at the front endl inthe cylinder plate.

y 3. In a lire door apparatus, the combination of a door frame, a pivotpin rigidly mounted in said frame,'a door pivoted on said pin, a motorcylinder having a flange rigidly secured to and supported on said pivotpin, and a pistonand connections for operating said door.

LlLIn a lire door` apparatus, the combination of a door frame,a pivotpin rigidly secured at its inner end in said frame, va door pivoted toswing laterally and vertically on said pin, a motor cylinder having adownwardly projecting flange rigidly se'- cured to and supported on theouter end of said'pin, and a piston and connections for operating saiddoor.

In testimonyy whereof we have hereunto set our hands.

ALBERT G. ELvrN.- SAMUEL D.l ROSENFELT.

Witnesses:

F. W. MARTIN, f JOHN L. MoHUN.

